JP2016509753A - 半導体発光デバイスにおけるpコンタクト抵抗の制御 - Google Patents
半導体発光デバイスにおけるpコンタクト抵抗の制御 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 77
- 229910052751 metal Inorganic materials 0.000 claims abstract description 134
- 239000002184 metal Substances 0.000 claims abstract description 134
- 239000000463 material Substances 0.000 claims abstract description 98
- 230000004888 barrier function Effects 0.000 claims abstract description 42
- 230000000903 blocking effect Effects 0.000 claims abstract description 29
- 238000000137 annealing Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 23
- 239000001257 hydrogen Substances 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 19
- 230000003213 activating effect Effects 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 229910052741 iridium Inorganic materials 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001887 tin oxide Inorganic materials 0.000 claims description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000004913 activation Effects 0.000 description 22
- 239000000758 substrate Substances 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001579 optical reflectometry Methods 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910019080 Mg-H Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical group [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
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Abstract
Description
Claims (18)
- n型領域とp型領域との間に配置された発光層を有する半導体構造であり、前記p型領域の表面は第1部分及び第2部分を有し、前記表面は当該半導体構造の成長方向に垂直であり、前記第1部分は前記第2部分より低導電性である、半導体構造と、
前記p型領域上に形成されたpコンタクトであり、当該pコンタクトは、
反射体と、
前記第1部分の上に配置され、前記第2部分の上には配置されない遮断材料と
を有する、pコンタクトと、
を有するデバイス。 - 前記pコンタクトは更にゲッターメタルを有し、前記ゲッターメタルは、前記反射体よりも容易に水素を除去する、請求項1に記載のデバイス。
- 前記ゲッターメタルは、前記p型領域と前記反射体との間に配置されている、請求項2に記載のデバイス。
- 前記ゲッターメタルは、前記反射体の中に配置されている、請求項2に記載のデバイス。
- 前記反射体は、前記p型領域と前記ゲッターメタルとの間に配置されている、請求項2に記載のデバイス。
- 前記ゲッターメタルは、Co、Ni、Fe、Cu、Coの合金、Niの合金、Feの合金、及びCuの合金のうちの1つを有する、請求項2に記載のデバイス。
- 前記遮断材料は金属である、請求項1に記載のデバイス。
- 前記遮断材料は、Co、Ni、Fe、Cu、Ti、W、Pt、Au、Ir、Ru、導電性酸化物、インジウム錫酸化物、酸化亜鉛、インジウム亜鉛酸化物、フッ素ドープされた酸化錫、アルミニウムドープされた酸化亜鉛、並びにCo、Ni、Fe、Cu、Ti、W、Pt、Au、Ir、及びRuのうちの1つの合金、のうちの1つを有する、請求項1に記載のデバイス。
- 前記半導体構造は、前記発光層と前記p型領域との一部が除去されている又は形成されていないメサを有し、且つ
前記第1部分は前記メサに隣接している、
請求項1に記載のデバイス。 - 当該デバイスは更に、
前記n型領域上に形成されたnコンタクトと、
前記pコンタクトに接続された第1の金属接合パッドと、
前記nコンタクトに接続された第2の金属接合パッドと、
前記第1の金属接合パッドと前記第2の金属接合パッドとの間に配置された間隙と
を有し、
前記第1部分は前記間隙に位置を揃えられている、
請求項1に記載のデバイス。 - n型領域とp型領域との間に配置された発光層を有するIII族窒化物構造内の前記p型領域を部分的に活性化することと、
前記p型領域を部分的に活性化した後に、前記p型領域の上に金属pコンタクトを形成することであり、前記金属pコンタクトは、
反射性である第1の金属と、
第2の金属と
を有する、形成することと、
前記金属pコンタクトを形成した後に、前記p型領域を更に活性化することと、
を有する方法。 - 部分的に活性化すること及び更に活性化することは、アニールすることを有する、請求項11に記載の方法。
- 部分的に活性化すること及び更に活性化することは、前記p型領域から水素を除去することを有する、請求項11に記載の方法。
- 前記金属pコンタクトを形成することは、前記第2の金属を、
前記p型領域の第1部分が前記第2の金属によって覆われ、且つ前記p型領域の第2部分が前記第2の金属によって覆われず、且つ
前記第2の金属が、前記第1部分から水素が除去されることを防止する、
ように形成することを有する、請求項13に記載の方法。 - 前記金属pコンタクトを形成することは、前記第2の金属の下に置かれた材料が酸化されることを前記第2の金属が防止するよう、前記第2の金属を形成することを有する、請求項13に記載の方法。
- n型領域とp型領域との間に配置された発光層を有する半導体構造であり、前記p型領域の表面は第1部分及び第2部分を有し、前記表面は当該半導体構造の成長方向に垂直であり、前記第1部分は前記第2部分より低導電性である、半導体構造と、
前記p型領域上に形成されたpコンタクトであり、当該pコンタクトは、
反射体と、
前記第1部分の上に配置され、前記第2部分の上には配置されない遮断材料と
を有する、pコンタクトと
を有し、
前記遮断材料は、前記発光層の第1領域に位置を揃えられ、前記発光層の第2領域には並べられず、且つ
前記第1領域は前記第2領域よりも少ない光を放出する、
半導体発光デバイス。 - 前記発光層と前記p型領域との一部が除去されている又は形成されていないことでメサが形成されており、前記第1部分は、前記メサと前記第2領域との間に配置されている、請求項16に記載の半導体発光デバイス。
- 前記第1領域は、前記n型領域に電気的に接続された第1の金属パッドと前記p型領域に電気的に接続された第2の金属パッドとの間に置かれた間隙に、位置を揃えられている、請求項16に記載の半導体発光デバイス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361756107P | 2013-01-24 | 2013-01-24 | |
US61/756,107 | 2013-01-24 | ||
PCT/IB2014/058275 WO2014115060A1 (en) | 2013-01-24 | 2014-01-15 | Control of p-contact resistance in a semiconductor light emitting device |
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US9917227B1 (en) * | 2014-05-07 | 2018-03-13 | Soraa, Inc. | Controlling oxygen concentration levels during processing of highly-reflective contacts |
US20180033912A1 (en) * | 2016-07-28 | 2018-02-01 | Lumileds Llc | Iii-p light emitting device with a superlattice |
CN109285774B (zh) * | 2018-09-12 | 2023-03-24 | 江苏能华微电子科技发展有限公司 | 一种基于氮化镓的结势垒肖特基二极管及其形成方法 |
WO2021207454A1 (en) * | 2020-04-10 | 2021-10-14 | The Regents Of The University Of California | Size-independent forward voltage in micro-size light-emitting diodes with an epitaxial tunnel junction |
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CN110429164B (zh) | 2022-11-25 |
KR102109150B1 (ko) | 2020-05-13 |
US11289624B2 (en) | 2022-03-29 |
KR102222218B1 (ko) | 2021-03-03 |
TW201436288A (zh) | 2014-09-16 |
TWI636588B (zh) | 2018-09-21 |
US9490131B2 (en) | 2016-11-08 |
KR20150109464A (ko) | 2015-10-01 |
EP2948977B1 (en) | 2020-09-16 |
US20200373462A1 (en) | 2020-11-26 |
KR20200051848A (ko) | 2020-05-13 |
US20170025576A1 (en) | 2017-01-26 |
CN104937700A (zh) | 2015-09-23 |
EP2948977A1 (en) | 2015-12-02 |
US9991419B2 (en) | 2018-06-05 |
CN104937700B (zh) | 2019-09-10 |
CN110429164A (zh) | 2019-11-08 |
US20180294379A1 (en) | 2018-10-11 |
WO2014115060A1 (en) | 2014-07-31 |
JP6340016B2 (ja) | 2018-06-06 |
US20150340563A1 (en) | 2015-11-26 |
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